Final answer:
The atypical trait of business correspondence would be any characteristic that does not align with clarity, conciseness, formality, and relevance, like the use of personal anecdotes or slang.
Step-by-step explanation:
The question 'Which of the following would not be considered a trait of business correspondence?' is asking to identify a characteristic that is not typically associated with business communication.
Traits of business correspondence generally include clarity, conciseness, formality, politeness, and relevance to business matters. Any trait that contradicts the principles of effective business communication, such as personal anecdotes or slang, would be considered atypical in a business context.